| http://www.w3.org/ns/prov#value | - ischarge lamp means, and a relatively low frequency line current to be drawn from the power line; the line current being characterized by having a periodic waveform that is substantially sinusoidal except for a current pulse being added at or near the peak of each half-cycle of the substantially sinusoidal waveform; each half-cycle having a half-period; each current pulse having a pulse-period; th
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